Optimizing quantum error correction protocols with erasure qubits

Understand

Erasure qubits offer a promising avenue toward reducing the overhead of quantum error correction (QEC) protocols.

• However, they require additional operations, such as erasure checks, that may add extra noise and increase runtime of QEC protocols.
• To assess the benefits provided by erasure qubits, we focus on the performance of the surface code as a quantum memory.
• In particular, we analyze various erasure check schedules, find the correctable regions in the phase space of error parameters and probe the subthreshold scaling of the logical error rate.